ASHRAE STD 158.2

Methods of Testing Capacity of Refrigerant Pressure Regulators

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Organization: ASHRAE
Publication Date: 31 July 2018
Status: active
Page Count: 16
scope:

This standard applies to refrigerant pressure regulators that meet the definition found in Section 3 and that are intended for refrigerant service in applications where only single-phase flow occurs within the regulator.

This standard is applicable to refrigerant pressure regulators

a. for use in either liquid or vapor refrigerant applications and

b. for use with refrigerants deemed suitable according to ANSI/ASHRAE Standard 15, Safety Standard for Refrigeration Systems 1 and ANSI/ASHRAE Standard 34, Designation and Safety Classification of Refrigerants 2.

This standard specifies procedures, apparatus, and instrumentation that will produce capacity and gradient information with sufficient accuracy to support the proper application of the tested regulator. 

This standard does not

a. specify rating conditions or electrical or mechanical design requirements (rating conditions may be found in ARI Standard 770, Refrigerant Pressure Regulating Valves 3),

b. make recommendations for safety, or

c. specify tests for production, specification compliance, or field testing of regulators.

PURPOSE

This standard provides methods of determining the mass flow capacity of refrigerant pressure regulators with sufficient accuracy to facilitate proper engineering application of the device in systems operating at various conditions with various refrigerants by

a. prescribing a method of measuring key flow and gradient characteristics of refrigerant pressure regulators using air or water as the working fluid and

b. prescribing computational means to enable reliable prediction of refrigerant vapor and liquid mass flow capacity based on the measured flow and gradient characteristics.

Document History

ASHRAE STD 158.2
July 31, 2018
Methods of Testing Capacity of Refrigerant Pressure Regulators
This standard applies to refrigerant pressure regulators that meet the definition found in Section 3 and that are intended for refrigerant service in applications where only single-phase flow occurs...
June 25, 2011
Methods of Testing Capacity of Refrigerant Pressure Regulators
This standard applies to refrigerant pressure regulators that meet the definition found in Section 3 and that are intended for refrigerant service in applications where only single-phase flow occurs...
June 24, 2006
Methods of Testing Capacity of Refrigerant Pressure Regulators
This standard applies to refrigerant pressure regulators that meet the definition found in Section 3, "Definitions," and that are intended for refrigerant service in applications where only...

References

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